Cap off your favorite Canteen with the Straw Cap from Corkcicle. Simply pop open the top and drink with ease. Straw Cap fits 16oz and 25oz Corkcicle Canteen, and even the smaller 9oz. Just cut the spare straw to desired length, screw on, and enjoy. The Straw Cap comes with two attachable straw pieces. Keep one as a backup for your 16oz or 25oz Canteen or cut it to desired length for 9oz. Sold separately from all Corkcicle Canteens.